Final answer:
The calculation of 1-51 results in -50, which is not found in the given options. Hence, the correct value is not listed.
Step-by-step explanation:
The value of 1-51 is calculated by subtracting 51 from 1, which results in -50. So, none of the provided options A) -5 B) 5 C) 15 D) 1 are correct.
Learn more about Subtraction